Balance-wheel for watches.



No. 8845,8152. PATENTED APR. 14, 1.968. 5; PORUBA, BALANGE WHEEL FOR WATCHES.

APPLIOATIGN EILIED 1353891 16, 190'].

Elwucni'on 1mm. mom I ressluliy perform surh an operation.

'rily displaces the bearing points JOHN POR'UBA, or ALLEGHENY, PENNSYLVANIA.

BALANCE-WHEEL F012 WATCHE S.

Specification of Letters Patent.

Patented. April 'Mi, 1%

Application filed September 16, 1907. Serial No. 393,083.

To all whom may con-earn:

Be it known that 1, Joan PORK/113A, a subect of the Emperor of AustrimHunga-ry, re-- siding at Allegheny in the county of Allegheny and State of Pennsylvania, have in vented certain. new and useful Improvements in Balaneo wheels for Watches, of which the following is a specification, relerenee being had therein to the accompanying drawing.

This invention. relates to balance Wheels for Watehes, and the invent-ion has for its object to pro ide a novel spindle or rotating center for a balance wheel having detachable hearings or points.

Considerable 'lron'ble has heretofore been ex' n-irienoed when Watche or similar time instrumenhs lame been. injured by tho displacement of balance wheels. It is a well--known fart that a watch. injured by falling ordinaof a balance wheel, injuring the said points and requiring the rvnmval ol' the balance wheel spindle. in this operalion the balanro whorl proper and the hair spring thereof are ordinarily brokrn, duo prini-ipally to the dillirult operation. of romovin r a spindle from a balance wheol, it rr-oniring ((lllSliiQllllllG skill to sum it is either the rim of tho halanrv wheel, the spider iorrool', or the hair spring that is injured when. removing the spindle from a balance wheel. in View of theso accidents my invention aims lo obviate the above dol'vrls by providing a balance whorl having dvtarhablo hoarings-m' points, which ran be easily and quirhly removznl without injuring tho-struciural elements ol' the balanre wheel.

'lhrv iiwrnlion in its broadest asporl. rolnprohvnds a balanre \vlwvl l'ramr having an. inlrriorly lhreadwl spider support for a spin: dlo, whivh rarrios detail-liable hearings or points.

.'llze.dvtail (onslillclloll (adoring into iho invention will be presently dvsvrilwd and Ellen sprriliraliy poiniml out in iho ap'prmlml claims.

In the drawings: Figure l is a cross sow tional View of the bnlanrr wheel ronslrurled in. accordance with ruv invrntion Fi Zis a been of the bearings thereof has or come damaged; l have devised a sinzp inexpensive spindle, the let'ier is pro with a hub portion of two dii'ieirev raters, that portion of larger dieme indicated by the reference diameter 35? the portion of smaller diameter by the z enee character 11, that portion of diameter is serew-Lhreaded. and siienll formed between the portions 16 an i the spindle is indicated by the character 11. The shouhler a seat for the depending boss or bras-e 2 of a balance wheel Ii. has the inner fees thereof sore at 12 for engagement wiih 2h .4 iiithat portion ll of the snindie. 12* formed in the spine! frame which forms a continuation ef'lhe o the boss 12 does not have the W211: screw-tl11ea led. The spindiel'orni. an upper and a lower shank 4 'lhfinppor shank 1 and the low thereof with threaded sockets threaded stems 15 of detachable bearings points 16. Iintendtominstruettlie ti i stems if) of approximately the same d otor as the screws 3, whereby the bear points can be readily, if notmore used quickly detached than the serous 2i. Llwrvl'oro evident. from the novel eons*' Lion of the spindleillustrated in Fig it will not be necessary to remove lho from the balance wheel unless the iropcr has been injured. When only 2L )Qarings or points thereof have been injure u these bearings or points can be easily an quickly removed and replarod by g hearings or points. The body of {be alive wheel is Lhorehire nolv snhjerlrd .1 4, handling that may rauso injury, and besides the prolm-tiou ol' the balance wheel, I redure the time to a minimum lwroioiore necessr. for repairing the halanro wheel oi a with, lie) or similar plow ol nwrhanisin.

From the foregoing description. it will be observed that my invention resides principally in lhrspindle o! a balance wheel, and in the novel manner ol dotachably mounting tho same in the halanre wheel, and ii-avlinn the same with removable lwurings or points.

It is thought that the invention will be fully understood from the above description, and in conclusion of said deseription, F. de sire to call attention to the fact that-sash 0d 11W iiinrenfzion n ma it and. scape oi the inveiitlo a. $1

suing and. a we of 1116 he boss ave-mg d Qpenmg and in close roximity to the shoulder pro'vlded with threads, the rcnmmder of shat part 05 the hub of smaller diameter having its periphery uninterrupted, said at suimfle further embodying a pair of saanks, '5 16: diameter of said shanks baing' the same me and the diameter of each of the shanks being the same throughout, each of said shanks having a screw 5 IQfi-dfid socket, and detachub lubearings engaging in said sockets In testimony whereof I afl'ix my signature in the presence of two witnesses.

JOHN PORUBA.

Witnesses;

Gm. L. YOUNG, A. H. Rwsmc. 

